Chillicothe weather in October
In October, Chillicothe sees average daytime highs of 66°F and overnight lows near 47°F, with 2.9 in of precipitation across 8.7 wet days and about 11 hours of daylight. It is the 6th-warmest and 11th-wettest month of the year here.
Highs ease over the month, from about 71°F in the first days to 60°F by the end. The sky is clear or mostly clear about 39% of the time in October, and the air most often feels dry.
Daylight stretches from about 11 h 36 min at the start of October to 10 h 18 min by month's end. Set against the rest of the year, October is Chillicothe's 3rd-clearest and 7th-windiest month. For the whole year in context, see Chillicothe's year-round climate.
- Daytime high
- 66°
- 6th warmest
- Overnight low
- 47°
- 7th coldest
- Precipitation
- 2.9 in
- 8.7 wet days
- Daylight
- 10 h 54 min
- 6:49 AM – 5:45 PM
- Cloud cover
- 54%
- 3rd clearest
- Wind
- 6 mph
- 7th windiest
- Solar energy
- 3.3 kWh/m²
- Travel score
- 6.1
- out of 10
Chillicothe is city in and the county seat of Ross County, Ohio, United States.
- Density
- 792/km²
- people per km²
- Founded
- 1803
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in October
Highs ease over the month, from about 71°F in the first days to 60°F by the end.
A typical October day in Chillicothe reaches about 66°F in the afternoon and slips back to 47°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 53°F and 78°F. Set against its neighbours, October runs about 12°F cooler than September and about 13°F warmer than November.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 72 | 72 | 71 | 71 | 71 | 70 | 70 | 69 | 69 | 68 | 68 | 67 | 67 | 67 | 66 | 65 | 65 | 65 | 64 | 64 | 63 | 63 | 62 | 62 | 62 | 61 | 61 | 60 | 60 | 59 | 59 |
| Avg low (°F) | 52 | 52 | 51 | 51 | 51 | 50 | 50 | 49 | 49 | 49 | 48 | 48 | 47 | 47 | 47 | 46 | 46 | 46 | 45 | 45 | 45 | 44 | 44 | 44 | 43 | 43 | 43 | 42 | 42 | 42 | 41 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 72 | 52 |
| 2 | 72 | 52 |
| 3 | 71 | 51 |
| 4 | 71 | 51 |
| 5 | 71 | 51 |
| 6 | 70 | 50 |
| 7 | 70 | 50 |
| 8 | 69 | 49 |
| 9 | 69 | 49 |
| 10 | 68 | 49 |
| 11 | 68 | 48 |
| 12 | 67 | 48 |
| 13 | 67 | 47 |
| 14 | 67 | 47 |
| 15 | 66 | 47 |
| 16 | 65 | 46 |
| 17 | 65 | 46 |
| 18 | 65 | 46 |
| 19 | 64 | 45 |
| 20 | 64 | 45 |
| 21 | 63 | 45 |
| 22 | 63 | 44 |
| 23 | 62 | 44 |
| 24 | 62 | 44 |
| 25 | 62 | 43 |
| 26 | 61 | 43 |
| 27 | 61 | 43 |
| 28 | 60 | 42 |
| 29 | 60 | 42 |
| 30 | 59 | 42 |
| 31 | 59 | 41 |
How October really feels in Chillicothe
Once humidity and wind are folded in, October averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.
October sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Chillicothe weather by month
How October compares with the rest of the year at a glance. October is the 6th-warmest and 11th-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 39° / 25° | 3.3 | 10.5 | 4.4 | 9.5 | 0.0 |
| Feb | 42° / 27° | 3.1 | 9.6 | 4 | 10.5 | 0.4 |
| Mar | 52° / 35° | 4.1 | 11.2 | 2 | 11.7 | 2.7 |
| Apr | 64° / 45° | 4.3 | 12.4 | 0.4 | 13 | 5.3 |
| May | 73° / 55° | 4.5 | 13 | 0 | 14.1 | 6.2 |
| Jun | 81° / 64° | 4.0 | 12.2 | 0 | 14.7 | 5.9 |
| Jul | 85° / 67° | 3.7 | 12 | 0 | 14.5 | 5.2 |
| Aug | 84° / 65° | 2.9 | 9.9 | 0 | 13.5 | 5.7 |
| Sep | 78° / 58° | 3.0 | 8.2 | 0 | 12.3 | 7.1 |
| Oct | 66° / 47° | 2.9 | 8.7 | 0.1 | 11 | 6.1 |
| Nov | 53° / 37° | 3.1 | 9.2 | 0.7 | 9.8 | 3.1 |
| Dec | 43° / 30° | 3.4 | 10.2 | 2.6 | 9.3 | 0.5 |
Cloud cover in October
The sky is clear or mostly clear about 39% of the time in October.
Beyond those clear spells, partly cloudy skies cover about 12% of October, with mostly cloudy or overcast conditions the remaining 49%. Skies tend to cloud over as the month goes on.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 57 | 56 | 56 | 57 | 56 | 56 | 56 | 55 | 54 | 54 | 54 | 53 | 53 | 52 | 51 | 51 | 51 | 51 | 49 | 49 | 48 | 48 | 47 | 46 | 46 | 46 | 45 | 45 | 45 | 44 | 44 |
| Cloudier (%) | 43 | 44 | 44 | 43 | 44 | 44 | 44 | 45 | 46 | 46 | 46 | 47 | 47 | 48 | 49 | 49 | 49 | 49 | 51 | 51 | 52 | 52 | 53 | 54 | 54 | 54 | 55 | 55 | 55 | 56 | 56 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 57 | 43 |
| 2 | 56 | 44 |
| 3 | 56 | 44 |
| 4 | 57 | 43 |
| 5 | 56 | 44 |
| 6 | 56 | 44 |
| 7 | 56 | 44 |
| 8 | 55 | 45 |
| 9 | 54 | 46 |
| 10 | 54 | 46 |
| 11 | 54 | 46 |
| 12 | 53 | 47 |
| 13 | 53 | 47 |
| 14 | 52 | 48 |
| 15 | 51 | 49 |
| 16 | 51 | 49 |
| 17 | 51 | 49 |
| 18 | 51 | 49 |
| 19 | 49 | 51 |
| 20 | 49 | 51 |
| 21 | 48 | 52 |
| 22 | 48 | 52 |
| 23 | 47 | 53 |
| 24 | 46 | 54 |
| 25 | 46 | 54 |
| 26 | 46 | 54 |
| 27 | 45 | 55 |
| 28 | 45 | 55 |
| 29 | 45 | 55 |
| 30 | 44 | 56 |
| 31 | 44 | 56 |
Chance of precipitation in October
Chillicothe gets around 2.9 in of rain and snow over 8.7 wet days in October. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable precipitation averages around 28% and peaks near 32% on the wettest days, and about 0 day brings snow. The odds climb toward the end of the month.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 29 | 29 | 30 | 30 | 31 | 31 | 31 | 31 | 32 | 32 | 32 | 32 | 32 | 31 | 31 |
| Rain chance (%) | |
|---|---|
| 1 | 26 |
| 2 | 26 |
| 3 | 25 |
| 4 | 25 |
| 5 | 25 |
| 6 | 25 |
| 7 | 25 |
| 8 | 25 |
| 9 | 26 |
| 10 | 26 |
| 11 | 27 |
| 12 | 27 |
| 13 | 27 |
| 14 | 28 |
| 15 | 28 |
| 16 | 28 |
| 17 | 29 |
| 18 | 29 |
| 19 | 30 |
| 20 | 30 |
| 21 | 31 |
| 22 | 31 |
| 23 | 31 |
| 24 | 31 |
| 25 | 32 |
| 26 | 32 |
| 27 | 32 |
| 28 | 32 |
| 29 | 32 |
| 30 | 31 |
| 31 | 31 |
Humidity in October
Most of October feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, October lands in the dry band about 82% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 66 | 67 | 69 | 70 | 71 | 71 | 74 | 74 | 75 | 76 | 78 | 78 | 80 | 82 | 82 | 83 | 84 | 84 | 87 | 87 | 88 | 88 | 89 | 90 | 90 | 90 | 91 | 91 | 91 | 92 | 93 |
| Comfortable (%) | 17 | 16 | 16 | 15 | 15 | 15 | 14 | 14 | 14 | 13 | 13 | 13 | 12 | 12 | 12 | 11 | 11 | 11 | 10 | 10 | 9 | 9 | 9 | 8 | 8 | 8 | 7 | 7 | 7 | 7 | 6 |
| Humid (%) | 12 | 12 | 11 | 11 | 10 | 10 | 9 | 9 | 8 | 8 | 7 | 7 | 6 | 5 | 5 | 5 | 4 | 4 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 |
| Muggy (%) | 5 | 5 | 4 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| 1 | 66 | 17 | 12 | 5 |
| 2 | 67 | 16 | 12 | 5 |
| 3 | 69 | 16 | 11 | 4 |
| 4 | 70 | 15 | 11 | 4 |
| 5 | 71 | 15 | 10 | 4 |
| 6 | 71 | 15 | 10 | 4 |
| 7 | 74 | 14 | 9 | 3 |
| 8 | 74 | 14 | 9 | 3 |
| 9 | 75 | 14 | 8 | 3 |
| 10 | 76 | 13 | 8 | 3 |
| 11 | 78 | 13 | 7 | 2 |
| 12 | 78 | 13 | 7 | 2 |
| 13 | 80 | 12 | 6 | 2 |
| 14 | 82 | 12 | 5 | 1 |
| 15 | 82 | 12 | 5 | 1 |
| 16 | 83 | 11 | 5 | 1 |
| 17 | 84 | 11 | 4 | 1 |
| 18 | 84 | 11 | 4 | 1 |
| 19 | 87 | 10 | 3 | 0 |
| 20 | 87 | 10 | 3 | 0 |
| 21 | 88 | 9 | 3 | 0 |
| 22 | 88 | 9 | 3 | 0 |
| 23 | 89 | 9 | 2 | 0 |
| 24 | 90 | 8 | 2 | 0 |
| 25 | 90 | 8 | 2 | 0 |
| 26 | 90 | 8 | 2 | 0 |
| 27 | 91 | 7 | 2 | 0 |
| 28 | 91 | 7 | 2 | 0 |
| 29 | 91 | 7 | 2 | 0 |
| 30 | 92 | 7 | 1 | 0 |
| 31 | 93 | 6 | 1 | 0 |
Wind in October
Winds average 6 mph in October.
Across October, daily wind ranges from about 6 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (mph) | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (mph) | Feels | |
|---|---|---|
| 1 | 6 | calm |
| 2 | 6 | calm |
| 3 | 6 | calm |
| 4 | 6 | calm |
| 5 | 6 | calm |
| 6 | 6 | calm |
| 7 | 6 | calm |
| 8 | 6 | calm |
| 9 | 6 | calm |
| 10 | 6 | calm |
| 11 | 6 | calm |
| 12 | 6 | calm |
| 13 | 6 | calm |
| 14 | 6 | calm |
| 15 | 6 | calm |
| 16 | 6 | calm |
| 17 | 6 | calm |
| 18 | 6 | calm |
| 19 | 7 | calm |
| 20 | 7 | calm |
| 21 | 7 | calm |
| 22 | 7 | calm |
| 23 | 7 | calm |
| 24 | 7 | calm |
| 25 | 7 | calm |
| 26 | 7 | calm |
| 27 | 7 | calm |
| 28 | 7 | calm |
| 29 | 7 | calm |
| 30 | 7 | calm |
| 31 | 7 | calm |
Sunrise & sunset in October
Daylight runs from about 11 h 36 min at the start of October to 10 h 18 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 78 minutes over October. Sunrise moves from 6:33 AM to 7:05 AM, and sunset from 6:09 PM to 5:26 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 11.6 | 11.5 | 11.5 | 11.5 | 11.4 | 11.4 | 11.3 | 11.3 | 11.2 | 11.2 | 11.2 | 11.1 | 11.1 | 11.0 | 11.0 | 10.9 | 10.9 | 10.9 | 10.8 | 10.8 | 10.7 | 10.7 | 10.7 | 10.6 | 10.6 | 10.5 | 10.5 | 10.5 | 10.4 | 10.4 | 10.3 |
| Sunrise (AM) | 6:33 | 6:34 | 6:35 | 6:36 | 6:37 | 6:38 | 6:39 | 6:40 | 6:41 | 6:42 | 6:43 | 6:44 | 6:45 | 6:46 | 6:47 | 6:49 | 6:50 | 6:51 | 6:52 | 6:53 | 6:54 | 6:55 | 6:56 | 6:57 | 6:58 | 6:59 | 7:01 | 7:02 | 7:03 | 7:04 | 7:05 |
| Sunset (PM) | 6:09 | 6:07 | 6:05 | 6:04 | 6:02 | 6:01 | 5:59 | 5:57 | 5:56 | 5:54 | 5:53 | 5:51 | 5:50 | 5:48 | 5:47 | 5:45 | 5:44 | 5:43 | 5:41 | 5:40 | 5:38 | 5:37 | 5:36 | 5:34 | 5:33 | 5:32 | 5:31 | 5:29 | 5:28 | 5:27 | 5:26 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.6 | 6:33 | 6:09 |
| 2 | 11.5 | 6:34 | 6:07 |
| 3 | 11.5 | 6:35 | 6:05 |
| 4 | 11.5 | 6:36 | 6:04 |
| 5 | 11.4 | 6:37 | 6:02 |
| 6 | 11.4 | 6:38 | 6:01 |
| 7 | 11.3 | 6:39 | 5:59 |
| 8 | 11.3 | 6:40 | 5:57 |
| 9 | 11.2 | 6:41 | 5:56 |
| 10 | 11.2 | 6:42 | 5:54 |
| 11 | 11.2 | 6:43 | 5:53 |
| 12 | 11.1 | 6:44 | 5:51 |
| 13 | 11.1 | 6:45 | 5:50 |
| 14 | 11.0 | 6:46 | 5:48 |
| 15 | 11.0 | 6:47 | 5:47 |
| 16 | 10.9 | 6:49 | 5:45 |
| 17 | 10.9 | 6:50 | 5:44 |
| 18 | 10.9 | 6:51 | 5:43 |
| 19 | 10.8 | 6:52 | 5:41 |
| 20 | 10.8 | 6:53 | 5:40 |
| 21 | 10.7 | 6:54 | 5:38 |
| 22 | 10.7 | 6:55 | 5:37 |
| 23 | 10.7 | 6:56 | 5:36 |
| 24 | 10.6 | 6:57 | 5:34 |
| 25 | 10.6 | 6:58 | 5:33 |
| 26 | 10.5 | 6:59 | 5:32 |
| 27 | 10.5 | 7:01 | 5:31 |
| 28 | 10.5 | 7:02 | 5:29 |
| 29 | 10.4 | 7:03 | 5:28 |
| 30 | 10.4 | 7:04 | 5:27 |
| 31 | 10.3 | 7:05 | 5:26 |
Solar energy in October
Average shortwave solar energy reaching the ground each day in October, about 3.3 kWh/m².
For context, solar energy here swings from a low near 1.68 kWh/m² to a high of 6.18 kWh/m² in June across the year — October's 3.3 kWh/m² falls in the middle.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 3.9 | 3.9 | 3.9 | 3.8 | 3.8 | 3.7 | 3.7 | 3.7 | 3.6 | 3.6 | 3.5 | 3.5 | 3.5 | 3.4 | 3.4 | 3.3 | 3.3 | 3.2 | 3.2 | 3.1 | 3.1 | 3.0 | 3.0 | 2.9 | 2.9 | 2.9 | 2.8 | 2.8 | 2.7 | 2.7 | 2.7 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 3.9 | Moderate |
| 2 | 3.9 | Moderate |
| 3 | 3.9 | Moderate |
| 4 | 3.8 | Moderate |
| 5 | 3.8 | Moderate |
| 6 | 3.7 | Moderate |
| 7 | 3.7 | Moderate |
| 8 | 3.7 | Moderate |
| 9 | 3.6 | Moderate |
| 10 | 3.6 | Moderate |
| 11 | 3.5 | Moderate |
| 12 | 3.5 | Moderate |
| 13 | 3.5 | Moderate |
| 14 | 3.4 | Moderate |
| 15 | 3.4 | Moderate |
| 16 | 3.3 | Moderate |
| 17 | 3.3 | Moderate |
| 18 | 3.2 | Moderate |
| 19 | 3.2 | Moderate |
| 20 | 3.1 | Moderate |
| 21 | 3.1 | Moderate |
| 22 | 3.0 | Moderate |
| 23 | 3.0 | Moderate |
| 24 | 2.9 | Moderate |
| 25 | 2.9 | Moderate |
| 26 | 2.9 | Moderate |
| 27 | 2.8 | Moderate |
| 28 | 2.8 | Moderate |
| 29 | 2.7 | Moderate |
| 30 | 2.7 | Moderate |
| 31 | 2.7 | Moderate |
Is October a good time to visit Chillicothe?
Our two travel scores rate October for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
October is a reasonable time to visit Chillicothe for sightseeing.
What to pack for Chillicothe in October
From October's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In October, Chillicothe sees daytime highs around 66°F and nights near 47°F. Worth packing: rain gear. About 9 days see rain.
UV index in Chillicothe in October
Clear-sky midday UV in October peaks around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Chillicothe peaks around June 19 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 2 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 3 | 5 | 6 | 8 | 10 | 9 | 8 | 6 | 3 | 3 | 2 |
| Level | Low | Moderate | Moderate | High | Very high | Very high | Very high | Very high | High | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 3 | Moderate |
| Mar | 5 | Moderate |
| Apr | 6 | High |
| May | 8 | Very high |
| Jun | 10 | Very high |
| Jul | 9 | Very high |
| Aug | 8 | Very high |
| Sep | 6 | High |
| Oct | 3 | Moderate |
| Nov | 3 | Moderate |
| Dec | 2 | Low |
Air quality in Chillicothe in October
Average fine-particle pollution (PM2.5) through the year — so you can see where October falls, not just the annual average.
Air quality in Chillicothe is worst in July — around 18 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (October, 8 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 9 | 10 | 10 | 11 | 14 | 17 | 18 | 15 | 12 | 8 | 8 | 8 |
| Level | Good | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 9 | Good |
| Feb | 10 | Good |
| Mar | 10 | Good |
| Apr | 11 | Good |
| May | 14 | Moderate |
| Jun | 17 | Moderate |
| Jul | 18 | Moderate |
| Aug | 15 | Moderate |
| Sep | 12 | Good |
| Oct | 8 | Good |
| Nov | 8 | Good |
| Dec | 8 | Good |
Where is Chillicothe?
Chillicothe sits at 39.3°N, 83.0°W, 630 ft above sea level, in United States. The nearest listed city is Lancaster, 34 mi away.
Topography around Chillicothe
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Chillicothe.
Within 2 miles, the terrain around Chillicothe has only modest variations in elevation — a maximum elevation change of 469 ft around an average of 673 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 778 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 892 ft.
The land around Chillicothe is covered by trees (36%), grassland (28%) and artificial surfaces (25%) within 2 miles, trees (58%) and cropland (22%) within 10 miles, and trees (53%) and cropland (31%) within 50 miles.
United States travel facts
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 100% of US
- price level, 2025
- GDP per capita
- $90,027
- 2025
- Happiness
- 6.8 / 10
- World Happiness, 2025
- Safe drinking water
- 98%
- of population, 2024
- Homicide rate
- 5.8
- per 100k, 2023
- Road deaths
- 12.7
- per 100k/yr, 2019
- Income group
- High
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Chillicothe (39.3331°, -82.9824°, elevation 630 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).